#loading {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.77);
    display: none; /* escondido */
    align-items: center;
    justify-content: center;
    z-index: 9999;
  }

  #loading .spinner {
    width: 50px;
    height: 50px;
    border: 5px solid #fff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
  }

  #loading .txt-loading {
  margin-top: 10px
  color: white;
  text-align: center;
}

  @keyframes spin {
    to { transform: rotate(360deg); }
  }